复制代码 代码如下:

<pre name="code">/**

*往输入域中插入字符串(光标所在位置)

*@param $t document.getElementById('fieldId')

*@param myValue 要插入的值

**

function addSplitToField($t,myValue){

if (document.selection) {

$t.focus();

sel = document.selection.createRange();

sel.text = myValue;

$t.focus();

}else if($t.selectionStart || $t.selectionStart == '0') {

var startPos = $t.selectionStart;

var endPos = $t.selectionEnd;

var scrollTop = $t.scrollTop;

$t.value = $t.value.substring(0, startPos) + myValue + $t.value.substring(endPos, $t.value.length);

this.focus();

$t.selectionStart = startPos + myValue.length;

$t.selectionEnd = startPos + myValue.length;

$t.scrollTop = scrollTop;

}else{

$t.value += myValue;

$t.focus();

}

}

</pre><br><br>